* The AbstractSet class defines a single abstract method, has().

* An asynchronously iterable queue class. Add values with enqueue() * and remove them with dequeue(). dequeue() returns a Promise, which * means tha

* A BitSet is a concrete subclass of AbstractWritableSet with a * very efficient fixed-size set implementation for sets whose * elements are non-neg

* Instances of this Complex class represent complex numbers. * Recall that a complex number is the sum of a real number and an * imaginary number an

* A Set-like class that keeps track of how many times a value has * been added. Call add() and remove() like you would for a Set, and * call count()

* NotSet is a concrete subclass of AbstractSet. * The members of this set are all values that are not members of some * other set. Because it is def

* Range set is a concrete subclass of AbstractSet. Its members are * all values that are between the from and to bounds, inclusive. * Since its memb

* This class defines a custom HTML <search-box> element that displays an * <input> text input field plus two icons or emoji. By default, it displays